Finding the Fourth Proportional to 2,667.05, 4,000.67 and 719.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.05 : 4,000.67 = 719.30 : x
2. Step 2: Convert to fraction form
   2,667.05/4,000.67 = 719.30/x
3. Step 3: Cross multiply
   2,667.05x = 4,000.67 × 719.30
4. Step 4: Simplify right side
   2,667.05x = 2,877,681.93
5. Step 5: Solve for x
   x = 2,877,681.93/2,667.05
6. Step 6: Final answer
   x = 1,078.98